CORRUGATED CARDBOARD CASE FOR PROTECTING INFORMATION RECORDING MEDIUM AND CORRUGATED CARDBOARD SHEET

摘要

PROBLEM TO BE SOLVED: To provide a paper-made information recording medium protection material wherein lightweight buffer material using thin paper or a paper board is supplied and which is suitable for transportation, carrying, storage or long- term storage of an information recording medium requiring space-saving and reduction in weight. SOLUTION: A corrugated cardboard case for protecting an information recording medium is constituted of a double faced corrugated cardboard sheet whose number of corrugation peaks is 90 or more per 30 cm and thickness is bellow 1.2 mm.